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Expert Systems ABSTRACT Expert systems are used in all sectors of organizations to help aid users with their work This paper will be giving a brief introduction to expert systems and will be looking back at the history of expert systems This paper will also look at the characteristics of expert systems and what they are used for The advantages and disadvantages of expert systems will also be discussed in this paper 1 Introduction Expert systems are programs that provide the type of advice that would be expected from a human expert It is also known as knowledge based system expert systems are able to store and manipulate knowledge so that they can help a user solve a problem or make a decision Expert systems technology drives from the research discipline of Artificial Intelligence AI It is said by Jackson 1998 pg2 Artificial Intelligence is a branch of computer science concerned with the design and implementation of programs which are capable of emulating human cognitive skills such as problem solving visual perception and language understanding The main features of expert systems are It is limited to a specific domain It is typically rule based It ca reason with certain data It delivers advice It explains reasoning to the user Typical tasks for and expert system involve The interpretation of data such as solar signals Diagnosis of malfunction such as equipment faults or human diseases Structural analysis of complex objects such as chemical compounds Configuration of complex objects such as computer systems Planning of sequences of actions such as might be performed by robots Generally speaking expert systems overall performance depends on the knowledge it can bring to bear on a problem to be solved The quality of internal data processing in turn depends upon knowledge acquisition knowledge representation and reasoning strategy Performance also depends upon the quality of data input One of the most powerful attributes of expert systems is

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